<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title> align-content</title>
		<style>
			div {
				display: flex;
				width: 800px;
				height: 400px;
				background-color: red;
				flex-wrap:wrap;
				/* align-content: flex-start; */
				/* align-content: space-between; */
				align-content: space-between;
			}

			div span {
				width: 150px;
				height: 100px;
				background-color: blue;
				color：#fff;
				margin-right: 10px;
			}
		</style>
	</head>
	<body>
		<div>
			<span>1</span>
			<span>2</span>
			<span>3</span>
			<span>4</span>
			<span>5</span>
			<span>6</span>
			<span>7</span>
			<span>8</span>
		</div>
	</body>
</html>
